Ask question

Ask question

All categories

2 years ago

11

William got an 85 and an 88 on the first two quizzes. What formula can William use to determine the score he needs on the third

quiz to get an average of 90? What score does he need?

1 answer:

Andrej [43]2 years ago

8 0

He can use Mean Median and Range

You might be interested in

Orthogonalizing vectors. Suppose that a and b are any n-vectors. Show that we can always find a scalar γ so that (a − γb) ⊥ b, a

jeka57 [31]

Answer:

$\\ \gamma= \frac{a\cdot b}{b\cdot b}$

Step-by-step explanation:

The question to be solved is the following :

Suppose that a and b are any n-vectors. Show that we can always find a scalar γ so that (a − γb) ⊥ b, and that γ is unique if $b \neq 0$ . Recall that given two vectors a,b a⊥ b if and only if $a\cdot b =0$ where $\cdot$ is the dot product defined in $\mathbb{R}^n$ . Suposse that $b\neq 0$ . We want to find γ such that $(a-\gamma b)\cdot b=0$ . Given that the dot product can be distributed and that it is linear, the following equation is obtained

$(a-\gamma b)\cdot b = 0 = a\cdot b - (\gamma b)\cdot b= a\cdot b - \gamma b\cdot b$

Recall that $a\cdot b, b\cdot b$ are both real numbers, so by solving the value of γ, we get that

$\gamma= \frac{a\cdot b}{b\cdot b}$

By construction, this γ is unique if $b\neq 0$ , since if there was a $\gamma_2$ such that $(a-\gamma_2b)\cdot b = 0$ , then

$\gamma_2 = \frac{a\cdot b}{b\cdot b}= \gamma$

6 0

3 years ago

The ratio of boys and girls in the school musical is 5 to 8.Which of the following shows the possible numbers of boys and girls

Maurinko [17]

Answer:

I don't see the following ratios.

Step-by-step explanation:

I think you should add the following.

6 0

2 years ago

Read 2 more answers

For what value of x is the rational expression below<br> equal to zero?

krek1111 [17]

Answer:

4

Step-by-step explanation:

It's easy because 4-4=0 and anything divided by zero is zero.

8 0

3 years ago

0.05 is 1/10 of what

Gennadij [26K]

Answer:

.5

Step-by-step explanation:

.5 times 1/10 is .05. move the decimal over!

4 0

3 years ago

The ratio of fruit juice to sparkling water in a punch recipe is 523 for a party the host needs to make 240 ounce a punch how ma

Sedaia [141]

Uhhhhhhhhh A
orrrrrrrr B

4 0

2 years ago